I opened my mouth too soon , but I wasn't far off! I thought the ZZR 250 was a 4 cylinder, and that it had the same motor as the ZXR250. Nearly every other marque I've played with has done this! For example, my girlfriends Yamaha Zeal has the same motor as that years FZR250. My old GSX750F had exactly the same motor as a GSXR750, but was approx 20HP less (until I started playing )
The bike I was thinking of is the Kawasaki Balius. Same motor, same bore and stroke, 5.5HP less! (39.5 vs 45)
I still think that 40HP is a bit low for a 250, and that a few aftermarket bits would really free it up, but my "incredibly de-tuned" statement was a bit premature.
Note to self: ensure brain engaged before putting mouth in gear!